My share charm won't work in Windows 8

My share charm has stopped working in Windows 8.

Please follow the steps and check if it works.

a. Right Click on Taskbar and click on Task manager

b. Click On details

c. Click on Explorer.exe and click on End Task

d. Click on Ok.

Please follow the below steps:
a. Hold Windows Key + W.

b. Type cmd

b. Right click on Command Prompt to select "Run as Administrator".

c. Type sfc<space>/scannow.